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You are sending out 60 invitations to a party.each person can bring a guest if they wish. Suppose it's equal probable that the invitee does not show up,shows up alone, or with a guest.

(A) what is the expected number of guests that might show up,and it's standard deviation?

(B) what's the probability the number of guests is between 70 & 80?

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  • Category:- Statistics and Probability
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